EP0495617B1 - Feuille réceptrice d'images pour le transfert thermique - Google Patents

Feuille réceptrice d'images pour le transfert thermique Download PDF

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Publication number
EP0495617B1
EP0495617B1 EP92300294A EP92300294A EP0495617B1 EP 0495617 B1 EP0495617 B1 EP 0495617B1 EP 92300294 A EP92300294 A EP 92300294A EP 92300294 A EP92300294 A EP 92300294A EP 0495617 B1 EP0495617 B1 EP 0495617B1
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EP
European Patent Office
Prior art keywords
dye
receiving
heat transfer
sheet
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92300294A
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German (de)
English (en)
Other versions
EP0495617A1 (fr
Inventor
Mikio C/O Dai Nippon Printing Co. Ltd. Asajima
Takeshi C/O Dai Nippon Printing Co. Ltd. Ueno
Katsuyuki C/O Dai Nippon Printing Co. Ltd Oshima
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B41M5/423—Intermediate, backcoat, or covering layers characterised by non-macromolecular compounds, e.g. waxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B41M5/426—Intermediate, backcoat, or covering layers characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/914—Transfer or decalcomania
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block

Definitions

  • the present invention relates generally to a heat transfer image-receiving sheet and, more particularly, to a heat transfer image-receiving sheet which enables high-quality images to be formed on both its sides.
  • the thermal head of a printer is used as heating means to transfer a number of three- or four-color dots onto the heat transfer image-receiving sheet by a very short-time heating, thereby reconstructing a full-color image of the original with said multi-color dots.
  • the thus formed image is very clear - because the coloring material used is a dye, and excels in the reproducibility and gradation of halftone - because it excels in transparency.
  • heat transfer image-receiving sheets usable with such a sublimation type of heat transfer technique as mentioned above are those made of such substrate sheets as plastic sheets, laminated sheets of plastic sheets with paper or the like, synthetic paper or plain paper, which have a dye-receiving layer or layers on one or both sides.
  • an image-receiving sheet which enable images to be formed on both its sides by providing image-receiving layers on both sides of the substrate sheet is now expected to have wide applications in view of the effective exploitation of printing resources and a variety of image needs.
  • this invention provides a heat transfer image-receiving sheet comprising a substrate sheet and dye-receiving layers formed on both sides thereof, fundamentally characterized in that both said dye-receiving layers are matted.
  • the heat transfer image-receiving sheet of this invention concurrently satisfies the following conditions: A ⁇ ⁇ T, (I) and B ⁇ ⁇ T.
  • T is the thickness in »m of the heat transfer image-receiving sheet
  • A is the gloss in % of the first dye-receiving layer
  • B is the gloss in % of the second dye-receiving layer.
  • ⁇ and ⁇ are at most 0.3 (%/»m), preferably at most 0.2 (%/»m) and more preferably at most 0.1 (%/»m).
  • the "image traces" problem caused by surface printing is unaccountable only by offset; it is a problem inherent in transfer with thermal printing means such as a thermal head.
  • thermal printing means such as a thermal head.
  • the image traces can be effectively eliminated by matting both the dye-receiving layers under the above conditions. That is, when an image is formed on one side of a heat transfer image-receiving sheet having dye-receiving layers on both sides of the substrate sheet, the other dye-receiving side is locally roughed up or matted by the pressure and energy applied thereon by a thermal head during heat transfer, so that image traces appear thereon.
  • the substrate sheet is particularly thin, there is a problem that no high-quality image is obtained, because when images are formed on both its sides, the image on the back side may be seen through.
  • the dye-receiving layers which have been matted on their surfaces are provided on both sides of the substrate sheet, as mentioned above; even when an image is formed on one side, it is possible to effectively prevent the other side from being matted. Further, if white pigments, fillers or fluorescent whiteners are added to the dye-receiving layers and/or an intermediate layer, it is then possible to improve the clearness of the images formed on the dye-receiving layers and prevent image offset.
  • substrate sheets usable for this invention may be those made of synthetic paper (based on polyolefin and polystyrene), wood free paper, art or coated paper, cast-coated paper, wall paper-lining paper, synthetic resin- or emulsion-impregnated paper, synthetic rubber latex-impregnated paper, synthetic resin-incorporated paper, paper board, cellulose fiber paper, etc., or films or sheets of various plastics such as polyolefins, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate and polycarbonate. Also, white opaque or foamed films formed by adding white pigments or fillers to synthetic resins may be used as well.
  • Typical laminates include those of cellulose fiber paper with synthetic paper or plastic films or sheets.
  • the substrate sheet may have any desired thickness, but is generally of about 10 to 300 »m in thickness.
  • the above substrate sheet when poor in the adhesion to the dye-receiving layers formed thereon, may preferably be treated on its surfaces with a primer or by corona discharge.
  • the above substrate sheet may be provided on its surfaces with intermediate layers for sealing to the dye-receiving layers or with a view to imparting adhesion and cushioning and hiding properties to the dye-receiving layers.
  • intermediate layers may be formed of well-adhesive and - cushioning resins such as vinyl resin, polyurethane resin and rubber resin at a thickness of 0.5 to 40 »m.
  • These intermediate layers may additionally contain additives such as white pigments, e.g., titanium oxide; fillers, e.g., calcium carbonate, clay and talc; and fluorescent whiteners.
  • the dye-receiving layers formed on the surfaces of the above substrate sheet or intermediate layers serve to receive the sublimable dye coming from the heat transfer sheet and maintain the formed images thereon.
  • the binder resins for forming the dye-receiving layers may be polyolefinic resin such as polypropylene; halogenated vinylic resin such as polyvinyl chloride and polyvinylidene chloride, vinylic resin such as polyvinyl acetate and polyacrylic ester, polyester resin such as polyethylene terephthalate and polybutylene terephthalate, polystyrene resin, polyamide resin, copolymeric resin such as copolymers of olefins such as ethylene and propylene with other vinyl monomers, ionomers, cellulose resin such as cellulose diacetate and polycarbonate.
  • the vinyl and polyester resins particular preference is given to the vinyl and polyester resins.
  • the dye-receiving layers may be formed on the heat transfer image-receiving sheet by coating a solution or dispersion of the above binder resin in a suitable organic solvent or water - which also contains the required additives, e.g., releasants, antioxidants and UV absorbers - on both sides of the substrate sheet by suitable means such as gravure printing, screen printing or reverse roll coating using a gravure plate, followed by drying.
  • suitable means such as gravure printing, screen printing or reverse roll coating using a gravure plate, followed by drying.
  • the above dye-receiving layers should preferably contain a releasant so as to impart good releasability to the heat transfer sheet.
  • a releasant so as to impart good releasability to the heat transfer sheet.
  • silicone oil which may preferably be denatured or modified with epoxy, alkyl, amino, carboxy, alcohol, fluorine, alkylalkyl polyether, epoxy/polyether, polyether, etc.
  • the releasants may be used alone or in combination, and should preferably be added to 100 parts by weight of the binder resin in an amount of 1 to 20 parts by weight.
  • the releasant(s) When the releasant(s) is added in an amount departing from the above range, some problems may arise, such as a fusion of the heat transfer sheet and dye-receiving layer or a drop of printing sensitivity.
  • the thus formed dye-receiving layers should preferably lie in the range of 1 to 50 g/m2 on dry coverage basis. When the dry coverage is below the lower limit, the resultant dye-receiving layers become too thin to form satisfactory images.
  • these dye-receiving layers may additionally contain additives such as white pigments, e.g., titanium oxide, fillers, e.g., calcium carbonate, clay and talc and fluorescent whiteners.
  • white pigments e.g., titanium oxide
  • fillers e.g., calcium carbonate, clay and talc
  • fluorescent whiteners e.g., fluorescent whiteners
  • Matting the thus formed dye-receiving layers and regulating their glosses may preferably be achieved by the following procedures:
  • an ink for forming the dye-receiving layer which contains a filler having a suitable particle size, such as microsilica or calcium carbonate, may be coated on each side of the substrate sheet.
  • the gloss of the dye-receiving layer may then be adjusted by varying the amount of the above filler having a particle size of about 0.1-10 »m within the range of 20-60% by weight, for instance.
  • the dye-receiving layer formed on each side of the substrate sheet may be treated with an embossing roll.
  • the gloss of the dye-receiving layer may then be adjusted by varying the surface roughness of the embossing roll.
  • a sheet material which has been matted by some means may be used instead of treating the dye-receiving layer with the embossing roll.
  • a large amount of fine particles may be blown onto the dye-receiving layer provided on each side of the substrate sheet for matting.
  • the gloss of the dye-receiving layer may then be adjusted by varying the quantity of the particles blown.
  • the dye-receiving layer provided on each side of the substrate sheet may be rubbed with sandpaper.
  • the gloss of the dye-receiving layer may then be adjusted by varying the surface roughness of the sandpaper used or the number of rubbing.
  • Inks for forming the dye-receiving and intermediate layers may be coated on matting PET to form these layers. Then, the substrate sheet is laminated on the matting PET, followed by releasing the matting PET. The gloss of the dye-receiving layer may then be adjusted by controlling the surface roughness of the matting PET used.
  • the gloss of the dye-receiving layer is of particular importance.
  • a gloss higher than 40% a local matting of the back side occurring during image formation will be accentuated, and printability and other properties will become insufficient as well.
  • the "gloss” as used herein may be measured according to JIS P-8142-65, and the measurement thus found will be used as a standard in the present disclosure.
  • T is the thickness in »m of the heat transfer image-receiving sheet
  • A is the gloss in % of the first dye-receiving layer
  • B is the gloss in % of the second dye-receiving layer.
  • the values of ⁇ and ⁇ are at most 0.3 (%/»m), preferably at most 0.2 (%/»m) and more preferably at most 0.1 (%/»m).
  • a slipping agent may be added into the composition for the dye-receiving layer.
  • the heat transfer sheet used for heat transfer with the heat transfer image-receiving sheet of this invention may be formed of a paper or polyester film with a sublimable dye-containing layer provided on it.
  • all heat transfer sheets known so far in the art may be used as such for the invention.
  • the desired object is well achievable by the application of a heat energy of about 5-100 mJ/mm2 with recording hardware such as a thermal printer (e.g., Video Printer made by Hitachi, Ltd.) for a controlled time.
  • a thermal printer e.g., Video Printer made by Hitachi, Ltd.
  • Coating solutions for the intermediate and dye-receiving layers were coated on both sides of a substrate sheet of synthetic paper (Yupo-FRG-150 made by Oji Yuka K.K. and having a thickness of 150 »m) by means of a bar coater at the respective dry coverage of 1.0 g/m2 and 4.0 g/m2, pre-dried in a dryer and then dried at 100°C for 30 minutes in an oven to form dye-receiving layers, which were in turn matted on their surfaces by embossing, sandblasting or treatment with sandpaper to obtain a heat transfer image-receiving sheet according to this invention.
  • synthetic paper Yupo-FRG-150 made by Oji Yuka K.K. and having a thickness of 150 »m
  • Coating Solution for Intermediate Layer Polyurethane Resin Emulsion 100 parts Water 30 parts Coating Solution For Dye-Receiving Layers Vinyl Chloride/Vinyl Acetate Copolymer (#1000D made by Denki Kagaku Kogyo K.K.) 100 parts Amino-Modified Silicone (X-22-343 made by The Shin-Etsu Chemical Co., Ltd.) 3 parts Epoxy-Modified Silicon (KF-343 made by The Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl Ethyl Ketone/Toluene (at 1:1 weight ratio) 500 parts
  • Example 1 The procedures of Example 1 were followed with the exception that the glosses of the dye-receiving layers were regulated to 20% and 10%, respectively, whereby heat transfer image-receiving sheets according to this invention were obtained.
  • Example 1 The procedures of Example 1 were followed with the exception that the coating solutions for the intermediate and dye-receiving layers contained such additives as set out in Table 1, whereby heat transfer image-receiving sheets according to this invention were obtained.
  • Ex. 6 1 part of a fluorescent whitener was added to the coating solution for the dye-receiving layers
  • Ex. 7 1 part of a fluorescent whitener was added to the coating solution for the intermediate layers
  • Example 1 The procedures of Example 1 were followed with the exception that the glosses of the dye-receiving layers were 90%, 70% and 50%, respectively, whereby comparative heat transfer image-receiving sheets were obtained.
  • an ink for the dye layer whose composition will be given below, was coated on a 6-»m thick polyethylene terephthalate film, which had been subjected on the back side to a heat-resistant treatment, at a dry coverage of 1.0 g/m2 by means of a wire bar, followed by drying. Further, some drops of silicone oil (X-41 ⁇ 4003A made by Shin-Etsu Silicone K.K.) were added to the back side of the film through a dropper and spread all over it for back coating to obtain a heat transfer film.
  • silicone oil X-41 ⁇ 4003A made by Shin-Etsu Silicone K.K.
  • the incorporation of the white pigment, filler or fluorescent whitener into the dye-receiving and/or intermediate layers enables the images formed on the dye-receiving layers to be much improved in terms of sharpness, and serves well to prevent the image on the back side from being seen through.
  • coating solutions for the intermediate and dye-receiving layers were coated on both sides of a substrate sheet of coated paper (Mirror Coat made by Kanzaki Seishi K.K. and having a thickness of 100 »m) by means of a bar coater at the respective dry coverages of 1.0 g/m2 and 4.0 g/m2, pre-dried in a dryer and then dried at 100°C for 30 minutes in an oven to form dye-receiving layers, which were in turn matted on their surfaces by embossing, sandblasting or treatment with sandpaper to obtain a heat transfer image-receiving sheet according to this invention.
  • coated paper Morror Coat made by Kanzaki Seishi K.K. and having a thickness of 100 »m
  • Coating Solution for Intermediate Layer Polyurethane Resin Emulsion 100 parts Water 30 parts Coating Solution For Dye-Receiving Layers Vinyl Chloride/Vinyl Acetate Copolymer (#1000D made by Denki Kagaku Kogyo K.K.) 100 parts Amino-Modified Silicone (X-22-343 made by The Shin-Etsu Chemical Co., Ltd.) 3 parts Epoxy-Modified Silicon (KF-343 made by The Shin-Etsu Chemical Co., Ltd.) 3 parts Methyl Ethyl Ketone/Toluene (at 1:1 weight ratio) 500 parts
  • Example 10 The procedures of Example 10 were followed with the exception that the synthetic paper (Yupo-FRG made by Oji Yuka K.K. and having a thickness of 100 »m) was used as the substrate sheet and the glosses of the dye-receiving layers were regulated to 15%, whereby a heat transfer image-receiving sheet according to this invention was obtained.
  • synthetic paper Yupo-FRG made by Oji Yuka K.K. and having a thickness of 100 »m
  • Example 10 The procedures of Example 10 were followed with the exception that synthetic paper (Mirror Coat made by Kanzaki Seishi K.K. and having a thickness of 200 »m) was used as the substrate sheet and the glosses of the dye-receiving layers were regulated to 35%, whereby a heat transfer image-receiving sheet according to this invention was obtained.
  • synthetic paper Morror Coat made by Kanzaki Seishi K.K. and having a thickness of 200 »m
  • Example 10 The procedures of Example 10 were followed with the exception that the coated paper (Mirror Coat made by Kanzaki Seishi K.K. and having a thickness of 100 »m) was used as the substrate sheet and the glosses of the dye-receiving layers were regulated to 42%, whereby a heat transfer image-receiving sheet according to this invention was obtained.
  • the coated paper Morror Coat made by Kanzaki Seishi K.K. and having a thickness of 100 »m
  • Example 10 The procedures of Example 10 were followed with the exception that the coated paper (Mirror Coat made by Kanzaki Seishi K.K. and having a thickness of 200 »m) was used as the substrate sheet and the glosses of the dye-receiving layers were regulated to 65%, whereby a heat transfer image-receiving sheet according to this invention was obtained.
  • the coated paper Morror Coat made by Kanzaki Seishi K.K. and having a thickness of 200 »m

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  • Thermal Transfer Or Thermal Recording In General (AREA)

Claims (5)

  1. Feuille réceptrice d'image par transfert thermique, comprenant :
       une feuille de support et
       des couches réceptrices de colorants formées sur les deux faces de ladite feuille de support,
       lesdites deux couches réceptrices de colorant étant matées.
  2. Feuille réceptrice d'image par transfert thermique selon la revendication 1, dans laquelle la brillance de chacune desdites couches réceptrices de colorants, mesurée selon la norme JIS P-8142-65, est au plus de 40 %.
  3. Feuille réceptrice d'image par transfert thermique selon la revendication 2, dans laquelle les conditions I et II suivantes sont satisfaites en même temps :

    A < 0,3 T   (I)
    Figure imgb0013

    et

    B < 0,3 T   (II)
    Figure imgb0014

    dans lesquelles T est l'épaisseur en »m de la feuille réceptrice d'image par transfert thermique, A est la brillance en % de la première couche réceptrice de colorants et B est la brillance en % de la seconde couche réceptrice de colorants.
  4. Feuille réceptrice d'image par transfert thermique selon la revendication 2, dans laquelle les conditions I et II suivantes sont satisfaites en même temps :

    A < 0,2 T   (I)
    Figure imgb0015

    et

    B < 0,2 T   (II)
    Figure imgb0016

    dans lesquelles T est l'épaisseur en »m de la feuille réceptrice d'image par transfert thermique, A est la brillance en % de la première couche réceptrice de colorants et B est la brillance en % de la seconde couche réceptrice de colorants.
  5. Feuille réceptrice d'image par transfert thermique selon la revendication 1, dans laquelle une couche intermédiaire est encore disposée entre chacune desdites couches réceptrices de colorants et ladite feuille de support, lesdites couches réceptrices de colorants et/ou couches intermédiaires contenant un pigment blanc, une charge ou un azurant optique.
EP92300294A 1991-01-14 1992-01-14 Feuille réceptrice d'images pour le transfert thermique Expired - Lifetime EP0495617B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3015977A JPH04241993A (ja) 1991-01-14 1991-01-14 熱転写受像シート
JP15977/91 1991-01-14

Publications (2)

Publication Number Publication Date
EP0495617A1 EP0495617A1 (fr) 1992-07-22
EP0495617B1 true EP0495617B1 (fr) 1995-04-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92300294A Expired - Lifetime EP0495617B1 (fr) 1991-01-14 1992-01-14 Feuille réceptrice d'images pour le transfert thermique

Country Status (4)

Country Link
US (1) US5266550A (fr)
EP (1) EP0495617B1 (fr)
JP (1) JPH04241993A (fr)
DE (1) DE69202158T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5902770A (en) * 1993-10-08 1999-05-11 Dai Nippon Printing Co., Ltd. Thermal transfer image-receiving sheet

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08132747A (ja) * 1994-11-04 1996-05-28 Dainippon Printing Co Ltd 熱転写受像シートおよびその光沢制御方法
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WO1998032542A1 (fr) * 1997-01-29 1998-07-30 Bando Chemical Industries, Ltd. Feuille destinee a recevoir une image en vue d'une impression, et procede de fabrication de celle-ci
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JPH04241993A (ja) 1992-08-28
EP0495617A1 (fr) 1992-07-22
DE69202158D1 (de) 1995-06-01
DE69202158T2 (de) 1995-10-12
US5266550A (en) 1993-11-30

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